Archery arrow with shaft supporting arrow head assembly

ABSTRACT

An arrow head mounted in a hollow arrow shaft by an attachment member in supportive abutting engagement with the inner peripheral surface of the shaft and the end surface of the shaft with a sleeve member held in supportive abutting engagement with the outer peripheral surface of the shaft and abuttingly retained between the attachment member and the arrow head.

Groner Feb. 25, 1975 ARCHERY ARROW WITH SHAFT SUPPORTING ARROW HEAD ASSEMBLY [75] Inventor: Norman A. Groner, Kalkaska, Mich.

[73] Assignee: Victor Comptometer Corporation,

Chicago, Ill.

[22] Filed: Aug. 13, 1974 [21] Appl. No.: 496,946

[52] US. Cl 273/1065 B [51] Int. Cl. F411) 5/02 [58] Field of Search 273/1065 R, 106.5 B; 46/6 [56] References Cited UNITED STATES PATENTS 2,289,284 7/1942 Chandler 273/1065 B 2,568,417 9/1951 Steinbacher.... 273/1065 B 3,401,938 9/1968 Bear 273/1065 B 3,741,542 6/1973 Karbo 273/1065 B OTHER PUBLICATIONS Archery Magazine, October, 1972, p. 29, Robin Hood Change-A-Points. Archery Magazine, January, 1969, p. 25, Fred Bear Converta-Point Set.

The Sporting Goods Dealer, August, 1972, p. 138, Bear Converta-Point Set.

Primary ExaminerPaul E. Shapiro Attorney, Agent, or Firm-Bruce G. Klaas 57 ABSTRACT An arrow headmounted in a hollow arrow shaft by an attachment member in supportive abutting engagement with the inner peripheral surface of the shaft and the end surface of the shaft with a sleeve member held in supportive abutting engagement with the outer peripheral surface of the shaft and abuttingly retained between the attachment member and the arrow head.

5 Claims, 2 Drawing Figures 1 ARCHERY ARROW WITH SHAFT SUPPORTING ARROW HEAD ASSEMBLY BACKGROUND AND SUMMARY OF INVENTION In the archery field, hollow fiberglass arrows have been utilized for some time and it has been common practice to provide removable attachment means for arrow head members for fiberglass arrows as well as other kinds of arrow shafts. In the past, the ends of such arrows have been subject to deterioration and damage due to stressed induced in the relatively thin wall terminal portions primarily as the result of impact forces transmitted thereto from the arrow head in use of the arrow. Some attempts have been made to solve this problem by utilization of a spacing ring located between the end of the arrow shaft and the arrow head. However, the prior solutions have not been completely satisfactory.

The present invention involves the concept of completely confining the end of the arrow shaft between rigid metallic members which are arranged to reduce the stresses imparted to the end of the arrow shaft. In general, the inventive concepts reside in an arrow head attachment member telescopically mounted in the end of the arrow shaft with a cylindrical support and attachment surface of substantial axial length engaging the inner cylindrical surface of the end of the arrow shaft and a radially extending abutment surface engaging the end surface of the arrowshaft, an arrow head member removably mounted within the attachment member without any abutting engagement with the arrow shaft, and a support and spacer sleeve member having a support sleeve portion with an inner cylindrical peripheral surface extending axially a substantial distance in telescopic relationship to the end of the arrow shaft in abutting supportive engagement with the outer cylindrical peripheral surface of the end of the arrow shaft and having an annular spacer portion mounted in abutting relationship between the attachment member and the arrow head member.

BRIEF DESCRIPTION OF THE DRAWING A presently preferred and illustrative embodiment of the invention is shown in the accompanying drawing in which:

FIG. 1 is a side elevational view, partly in section, of

the front end portion of an archery arrow; and

FIG. 2 is an enlarged partial cross-sectional side elevational view of a portion of the apparatus shown in FIG. 1.

DETAILED DESCRIPTION Referring to the drawing, the front end portion of a conventional arrow shaft member of fiberglass material is shown in supporting engagement with an attachment and support sleeve member 12, a spacer sleeve member 14, and an arrow head member 16.

The shaft member 10 is hollow with a relatively thin cylindrical wall of fiberglass material having a cylindrical outer surface 22 and a cylindrical inner surface 24 defining a cylindrical chamber 26 and terminating at one end in an annular toroidal transverse end surface 28. The outside diameter of such conventional arrow shafts commonly nominally varies between approximately 0.324 inch and 0.360 inch while the inside diameter commonly nominally varies between approximately 0.269 inch and 0.289 inch. Thus, the thickness of wall 20 is relatively narrow and some problems have the form of a series of alternating sharp annular ridges 32 cooperable with the inner shaft surface 24 and grooves 34 to retain the glue for member 12 is assembled position. A central longitudinal cylindrical bore 36 has a reduced diameter threaded inner end portion 38 connected to an enlarged diameter outer end smooth wall cylindrical support portion 40 by an inclined abutment shoulder 42. A chamber 43 may be provided at the outer end of bore 36. An annular flange portion 44 on the outermost end of member 12 is defined by a flat transverse end surface 46 facing away from the arrow shaft, cylindrical peripheral surface 48 of larger diameter than surface 30 by an amount approximately equal to the thickness of wall portion 20 of shaft member 10, and an oppositely facing arrow shaft abutment side surface 50.

The spacer sleeve member 14 is made of machined relatively soft metallic material such as aluminum with a cylindrical outer peripheral surface 60, a first inner cylindrical surface 62, having a diameter approximately equal to the outside diameter of arrow shaft member so as to be closely slidably fitted thereon, a second inner cylindrical surface 64 having a diameter approximately equal to the diameter of bore portion 40, a first transverse toroidal abutment surface 66 facing towardthe shaft member, a second transverse toroidal abutment surface 68 facing away from the shaft member, a spacer wall portion 70 of substantial width between surfaces 66, 68 a chamfered rear surface 72 terminating in a relatively sharp thin rearwardmost edge 74, and a chamfered front surface 76 intersecting surface 68 along the circumference of a diameter approximately equal to the maximum outside diameter of the arrow head member.

The arrow head member 16 is made of relatively hard machined material such as cold rolled steel comprising a threaded mounting shaft portion 80, a cylindrical support shaft portion 82 connected to the shaft portion 80 by an inclined abutment surface 84, an enlarged intermediate cylindrical body portion 86 connected to the shaft portion 82 by a transverse toroidal abutment surface 88, and a forwardly tapered arrow point portion connected to the body portion 86 by an outwardly curved surface 92.

In the assembled position, member 12 is fixedly mounted in the cylindrical chamber 26 in the end of member 10 with side surface 50 abuttingly engaging the front end side surface 28 of the shaft member. Sleeve member 14 is closely slidably fitted over the end of the shaft member with cylindrical inner surface 62 in close fitting sliding engagement with the outer cylindrical surface 22 of shaft member 10. The length of surface 62 is such (e.g. 0.175 inch) as to extend over a substantial length of the end of the shaft member to supportively confine enough of the end of the shaft member to reduce axial compaction, radial expansion,

cracking, and fraying of the end of the arrow shaft due to impact forces imparted thereto from the arrow head in use. In addition, the abutment surface 50 extends radially coextensively with the end surface 28 of the shaft member and cylindrical support surface 30 abutingly engages the inner end surface 24 of the shaft to further confine and support all peripheral surfaces of the entire end of. the shaft portion.

Arrow head member 16 is inserted through spacer member 14 with threaded end portion 80 threaded into threaded bore portion 38 of member 12. Abutment surface 88 of arrow head member 16 engages abutment surface 68 on spacer member 14 and forces abutment surface 66 of member 14 into tight abutting engagement with abutment surface 46 of attachment member Thus, in assembled position, the end of the arrow shaft is completely confined by attachment member 12 and sleeve member 14. In addition, the end surface 28 of the shaft member 10 is spaced from the arrow head by the thickness of flange portion 44 of member l2 and the thickness of wall portion 70 of member 14.

In this manner, the end of the arrow shaft is protected from the destructive effects of impact forces in use of the arrow. 7

It is contemplated that the inventive concepts may be otherwise variously embodied and it is intended that the appended claims be construed to cover alternative embodiments except insofar as limited by the prior art.

The invention claimed is: 1. An archery arrow comprising: an arrow shaft member having an end for mounting an arrow head; V a'cylindrical chamber in said end of said arrow shaft member defined by a relatively thin cylindrical wall providing an outer: cylindrical peripheral surface and an inner cylindrical peripheral surface termi nated by a transverse end surface; an arrow attachment member supportively mounted in said cylindrical chamber, an outer cylindrical surface on said attachment member in supportive abutting engagement with said inner cylindrical pe- V ripheral surface of said arrow shaft, a radially outwardly extending flange portion on one end of said attachment member, a first abutment side surface on said flange portion abuttingly engaging said transverse end surface of said arrow shaft, a second abutment side surface on said flange portion spaced axially outwardly of said first abutment side 7 surface; a sleeve member mounted on said end of said arrow shaft member, a cylindrical inner peripheral surface in supportive abutting engagement with said outer'cylindrical peripheral surface of said arrow shaft member, a first radially extending side surface 5 in abutting engagement with said second abutment side surface on said flange portion of said attachment member,

a second radially extending side surface on said sleeve member spaced axially outwardly of said first radially extending side surface; and 7 an arrow head member supportively'mounted in said arrow attachment member, a radially extending abutment surface on "said arrow head member abuttingly engaging said second radially extending sidesurface on said sleeve member and holding V said sleeve member in fixed abutting relationship with said attachmentmember and said'end portion of said shaft member. a 2. The invention as defined in claim 1 and wherein: said attachment member having a central bore extending therethrough;

an axially inner portion of said bore being threaded,

an axially outer portion of said bore having an enlongated cylindrical support surface; and said arrow head member having an elongated support shaft portion located axially inwardly of said radially extending abutment surface, an axially innerportion of said shaft portion being threaded and threadably associated with said axially innerportion of said bore, an axially outer portionof said shaft portion being cylindrical and supportively associated with said elongated cylindrical support surface.

3. The invention as defined in claim 1 and wherein:

said arrow attachment member comprises a cylindrioutersurface of said arrow attachment member and intersecting said first radially extending side surface. 4. The invention as defined in claim 1 and wherein: said arrow shaft member being made of plastic material,

said attachment member and said sleeve member,

being made of relatively soft metallic material, and said arrow head member/being made of relatively hard metallic material.

5. An archery arrow comprising: 7

a hollow arrow shaft member of non-metallic material having axially extending inner and outer peripheral surfaces at an arrowhead attaching end portion connected by a transverse end surface, an arrow head attachment member fixedly telescopically mounted within the end portion having an axially extending outer peripheral surface in supportive abutting engagement with the inner peripheral surface of the end portion of said shaft member and a first transversely extending abutment surface in abutting supportiveengagement with the transverse end surface, said attachment member having a second transversely extending abutment surface axially outwardly spaced from said first transversely extending abutment surface,

.an arrow head member'fixedly mounted on said attachment member and extending axially outwardly therefrom and having a transversely extending abutment surface located axially outwardly of said. second transversely extending abutment surface of said attachment member, and

sleeve means, having'a load bearing portion mounted in abutting relationship between said second transversely extending abutment surface on said attachment member and said transversely extending.

abutment surface on said arrow headmember and having an axially extending inner peripheral surface in supportive abutting engagement withthe outer peripheral surface of the end portion of said arrow shaft. 

1. An archery arrow comprising: an arrow shaft member having an end for mounting an arrow head; a cylindrical chamber in said end of said arrow shaft member defined by a relatively thin cylindrical wall providing an outer cylindrical peripheral surface and an inner cylindrical peripheral surface terminated by a transverse end surface; an arrow attachment member supportively mounted in said cylindrical chamber, an outer cylindrical surface on said attachment member in supportive abutting engagement with said inner cylindrical peripheral surface of said arrow shaft, a radially outwardly extending flange portion on one end of said attachment member, a first abutment side surface on said flange portion abuttingly engaging said transverse end surface of said arrow shaft, a second abutment side surface on said flange portion spaced axially outwardly of said first abutment side surface; a sleeve member mounted on said end of said arrow shaft member, a cylindrical inner peripheral surface in supportive abutting engagement with said outer cylindrical peripheral surface of said arrow shaft member, a first radially extending side surface in abutting engagement with said second abutment side surface on said flange portion of said attachment member, a second radially extending side surface on said sleeve member spaced axially outwardly of said first radially extending side surface; and an arrow head member supportively mounted in said arrow attachment member, a radially extending abutment surface on said arrow head member abuttingly engaging said second radially extending side surface on said sleeve member and holding said sleeve member in fixed abutting relationship with said attachment member and said end portion of said shaft member.
 2. The invention as defined in claim 1 and wherein: said attachment member having a central bore extending therethrough; an axially inner portion of said bore being threaded, an axially outer portion of said bore having an enlongated cylindrical support surface; and said arrow head member having an elongated support shaft portion located axially inwardly of said radially extending abutment surface, an axially inner portion of said shaft portion being threaded and threadably associated with said axially inner portion of said bore, an axially outer portion of said shaft portion being cylindrical and supportively associated with said elongated cylindrical support surface.
 3. The invention as defined in claim 1 and wherein: said arrow attachment member comprises a cylindrical outer surface extending axially between said first abutment side surface and said second abutment side surface, said cylindrical outer surface being substantially coplanar with Said outer cylindrical peripheral surface of said shaft member, and said cylindrical inner peripheral surface of said sleeve member extending axially across said cylindrical outer surface of said arrow attachment member and intersecting said first radially extending side surface.
 4. The invention as defined in claim 1 and wherein: said arrow shaft member being made of plastic material, said attachment member and said sleeve member being made of relatively soft metallic material, and said arrow head member being made of relatively hard metallic material.
 5. An archery arrow comprising: a hollow arrow shaft member of non-metallic material having axially extending inner and outer peripheral surfaces at an arrow head attaching end portion connected by a transverse end surface, an arrow head attachment member fixedly telescopically mounted within the end portion having an axially extending outer peripheral surface in supportive abutting engagement with the inner peripheral surface of the end portion of said shaft member and a first transversely extending abutment surface in abutting supportive engagement with the transverse end surface, said attachment member having a second transversely extending abutment surface axially outwardly spaced from said first transversely extending abutment surface, an arrow head member fixedly mounted on said attachment member and extending axially outwardly therefrom and having a transversely extending abutment surface located axially outwardly of said second transversely extending abutment surface of said attachment member, and sleeve means having a load bearing portion mounted in abutting relationship between said second transversely extending abutment surface on said attachment member and said transversely extending abutment surface on said arrow head member and having an axially extending inner peripheral surface in supportive abutting engagement with the outer peripheral surface of the end portion of said arrow shaft. 